Accumulation of heavy metals in some species of the genus Sambucus L. in the south-west of the Central Chernozem region

The purpose of the research in this paper was to monitor heavy metals in plants of species of the genus elderberry. The identification of real concentrations of heavy metals in the fruits and leaves of the elderberry species is the research objective under study. The presence and concentration of heavy metals varies with elderberry species and parts of plant. Increased magnesium content was in red-fruited (Sambucus racemosa 'Aurea' L., Sambucus sibirica Nakai., Sambucus racemosa L., Sambucus racemosa 'Plumosa' L., Sambucus coreana Nakai.), and its concentration in fruits was much higher than in the leaves - Sambucus sibirica Nakai. (2 and 1.5 times, respectively). Besides, black-fruited elderberry species (Sambucus nigra L., Sambucus canadensis L., Sambucus canadensis Plumosa L.) have a lower concentration of magnesium. The concentration of copper in fruits and leaves of elderberry species is many times higher than normal. Its content in fruits 7 times (Sambucus racemosa Aurea L...